US8931473B2 - Method for controlling a cooking point of a gas oven and device - Google Patents
Method for controlling a cooking point of a gas oven and device Download PDFInfo
- Publication number
- US8931473B2 US8931473B2 US12/970,061 US97006110A US8931473B2 US 8931473 B2 US8931473 B2 US 8931473B2 US 97006110 A US97006110 A US 97006110A US 8931473 B2 US8931473 B2 US 8931473B2
- Authority
- US
- United States
- Prior art keywords
- gas burner
- pan
- gas
- power level
- cooking point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
Definitions
- the invention relates to a method for operating a cooking point with a gas burner, as used in a gas hob. Similarly, the invention relates to a corresponding device.
- pan detection detecting whether a pan has been placed on or removed. With the removal of the pan, the cooking point is switched off, but a power level that has been set continues to be maintained. If a pan is then placed on again, the burner ignites immediately and, on account of the pressure conditions in the gas system and the delay of the igniting process, a briefly larger gas flame may occur, even reaching to beyond the handles of the pan. The gas flame will at least be of the size of the level that has been set, possibly even larger because of the briefly larger flame. The user must therefore quickly remove his/her hands from the handles of the pan in order not to be burned by the flame.
- the invention addresses the problem of providing a method mentioned at the beginning and a corresponding device by which disadvantages of the prior art can be overcome and, in particular, more convenient operation of a cooking point with a gas burner is possible and risk of injury is reduced.
- the pan detection may advantageously be formed in the customary way that is known in principle, with capacitive, optical or mechanical systems being suitable in particular.
- the pan detection together with a control of the cooking point or the gas burner or the gas valve thereof, in particular together with an ignition device for the flame, brings about the effect that the pan detection detects when a pan that has previously been removed is re-placed onto the cooking point. It then reactivates the gas burner by igniting the gas burner and/or opening the gas valve, in order that the cooking process is therefore continued as it were of its own accord after the pan is placed on again.
- the originally set operation of the gas burner or a power level originally set for the gas burner only takes place or is reached to the full extent after a certain time delay.
- a user therefore then has time, at least the time of this delay, to remove his/her hands from the pan again, and in this way the risk of burning is reduced or eliminated.
- Said delay may advantageously be a few seconds, for example half a second to three or even five seconds. For instance, one to two seconds have proven to be advantageous, in order indeed to allow sufficient time on the one hand for the hands to be removed from the pan and on the other hand for a user to see relatively quickly that the cooking point is in operation again, or in turn in order that the cooking process is also not interrupted unnecessarily long.
- the pan detection detects the re-placed pan immediately or only with minimal delay, but the gas burner only ignites at all after said delay of a few seconds.
- the ignition of the gas burner waits for a short time after detection of the re-placed pan in order that the user can remove his/her hands from the pan. Only after the time delay is the gas burner ignited again. This may take place with a lower power level than that previously set or used. Since, however, a certain time is already available to remove the hands from the pan, re-ignition of the gas burner after the delay may also take place right away with the full power level previously set.
- the pan detection may likewise detect the re-placement of the pan immediately or with minimal delay and also ignite the gas burner immediately or as soon as possible.
- this ignition of the gas burner takes place with a power level which, though high enough that the gas burner reliably ignites, is at the same time well below the power level previously set.
- This immediate ignition advantageously takes place with the lowest possible power level of the gas burner at which reliable ignition occurs.
- the power level is slowly increased, until the power level previously set is reached. This slow increase of the power level proceeds over the aforementioned time delay and may indeed take the few seconds mentioned.
- the gas burner is therefore ignited immediately when the re-placed pan is detected and when a user in all probability still has his/her hands on the pan. Since, however, the power level used is not the full level previously set, which could possibly lead to burns, but only a lower or the smallest possible level, the risk of burning is in turn reduced or eliminated. By the time the power level is increased to that previously set, the time delay has in turn elapsed and a user has sufficient time to remove his/her hands. A gas flame with a very small or the smallest possible power level will generally not be sufficient to cause burning of the hands holding the pan placed on.
- the power level is possibly increased continuously to the value of the power level previously set. In further possibilities, it may first be increased slowly and then to ever increasing degrees or finally, also at the end of the delay, be increased abruptly.
- the removal of the pan from the cooking point is optically indicated.
- indicating means such as illuminating means or the like, for example light-emitting diodes, may be arranged in the region of the cooking point.
- an acoustic signal output may also take place. A signal output may continue for as long as the pan is removed and at the same time the cooking point has not yet been switched off as a result of a maximum time being exceeded.
- the power level setting is cancelled. Therefore, when a pan is placed on again, there is no automatic further operation of the cooking point or automatic switching back on of the gas burner. It may be provided in this respect that first an operating element for the power level setting has to be actuated, that is to say a power level setting has to be manually set again. In this way, the control can reliably detect that a user is again in attendance. In particular, it may be provided that the power level first has to be set again right back to zero and subsequently set to the desired degree. Also in this respect it may be provided that such exceeding of the maximum time in the way prescribed is optically and/or acoustically indicated.
- a signal is output shortly before the gas burner is re-ignited or shortly before the previously set power level is reached.
- This may be an optical signal or advantageously an acoustic signal.
- Such a signal may, for example, be generated half a second or a second before the power level originally set is reached when the pan is placed on again and the gas burner is automatically ignited.
- a slow turning-off operation takes place, or the power level is as it were slowly brought to zero. This may last a number of seconds, for example two seconds to five seconds. Furthermore, it may at the same time be indicated, once again optically and/or acoustically in the aforementioned way.
- slow turning off may also mean that, after the pan is removed, said few seconds are waited before the power level is brought down or the gas burner is turned off. As a result, the gas burner is not switched off unwantedly, if for example as a result of malfunctions or the like a pan is briefly not detected as placed-on.
- a control in which both the pan detection and the control for the gas valve of the gas burner are integrated together with measurement of the time or the delay may possibly be provided in a central control of a corresponding gas hob. Alternatively, it may be designed as an additional control for certain cooking points.
- the output of a signal, in particular an acoustic signal, before the ignition of the gas burner may have the advantage that, in the case where an object other than a pan has been placed on, for example a cooking spoon or the like, this is detected and an operator is warned of the imminent ignition of the gas burner. Then the object inadvertently placed on can be removed again and an accident avoided.
- FIG. 1 shows a side view of a gas hob according to the invention with a device for the time-delayed ignition of a gas burner of a cooking point and
- FIG. 2 shows a diagram of the power progression over time for various ways of increasing the power.
- FIG. 1 illustrates a gas hob 11 as a device according to the invention, on which the method according to the invention can be carried out.
- the gas hob 11 has a conventional hob panel 12 , and a cooking point 14 thereof is illustrated.
- the cooking point 14 has a conventional gas burner 16 with a gas valve 17 arranged under the hob panel 12 , from which valve said burner is supplied.
- an ignition device 18 Provided at the gas burner 16 is an ignition device 18 and advantageously a monitoring device (not illustrated) for the gas flames 19 .
- An essentially conventional pan support 20 on which a pan 22 is placed over the gas burner 16 and the cooking point 14 , is also provided. This pan support has yet further functions, as still to be explained below.
- the pan has side handles 23 , which are being gripped by hands 24 of the user, for example because said user has just placed the pan 22 on again.
- a control 26 which is connected not only to the gas valve 17 , for the activation thereof, and to the ignition device 18 but also, though not of any consequence here, to a possible flame monitor. Furthermore, the control 26 is connected to a pan detection device, which is not described in any more detail but is formed as a known reflex light barrier and is arranged underneath the hob panel 12 . Furthermore, the control 26 is connected to signal transmitters under the hob panel 12 , to be precise an acoustic signal transmitter 28 a and an optical signal transmitter 28 b . It is also possible to omit the signal transmitters or to provide only one of the two.
- the pan detection device 21 When the pan 22 is removed from the cooking point 14 , as the thick arrow indicates, the pan detection device 21 together with the control 26 detects this. The latter then closes the gas valve 17 , so that the gas burner 16 goes out or the gas flames 19 are extinguished. If the pan 22 is then placed on again with the hands 24 on the handles 23 , the pan detection device 21 detects the pan 22 . This then corresponds to the point in time t 0 in the diagram of the power P over the time t according to FIG. 2 , to be specific when the power of the gas burner 16 is increased from zero, that is when the gas valve 17 is closed.
- a power P min which is chosen such that it is the minimum power or minimum power level or minimum amount of gas with which the gas burner 16 can ignite and burn.
- a delay time T V which is the delay time mentioned at the beginning, there may be a few seconds, advantageously one to two seconds.
- the power P is then not increased over the minimum power P min , as shown by the solid line. This only happens abruptly at the point in time t 1 , and then specifically to the power originally set P 0 . This power P 0 was the power before the pan 22 was removed.
- an operator therefore has sufficient time after placing the pan 22 onto the cooking point 14 , that is the said one to two seconds, to remove the hands 24 again from the region in which the gas flames 19 can come.
- the gas burner 16 ignites again, the gas flames 19 scarcely reach over the base of the pan 22 to the sides and up to the handles 23 or the hands 24 , since said burner operates with the lowest possible minimum power.
- the power may, as from the point in time t 0 , first increase slightly and then ever more quickly as shown by a dotted curve in the manner of a parabola or non-linearly. As a result, it can also at the same time be signalled to a user that not only has re-ignition taken place but there has also been an increase in the power automatically beyond the minimum power P min . The user therefore does not have to worry that the cooking point 14 is malfunctioning.
- the increase as from the point in time t 0 may take place uniformly as shown by the dash-dotted representation.
- an increase in the burning power once again takes place here somewhat more quickly than in the case of the two previous curves, it is still always in such a way that, for example after the elapse of a time T V /2 after the point in time t 0 , there is still a much lower power than the power previously set P 0 .
- the gas burner 16 is still out or the gas valve 17 is closed. Only at the point in time t 1 , that is after the delay time T V , is the gas burner 16 ignited by opening of the gas valve 17 and actuation of the ignition device 18 , then however right away as shown by the dashed curve with the full pre-set power P 0 .
- This has the advantage that even a possibly existing risk of burning caused by a gas flame with the low minimum power P min is eliminated, since indeed there are still no gas flames 19 .
- the re-ignition of the gas burner 16 at the point in time t 1 then takes place with the full pre-set power P 0 and abruptly.
- an acoustic and/or optical signal output by the signal transmitters 28 a and 28 b may take place at a point in time t 0 , t 1 or a point in time in between. This may signal re-ignition of the gas burner 16 , that the full power previously set P 0 will soon be reached or has been reached, or something similar.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
- Regulation And Control Of Combustion (AREA)
- Baking, Grill, Roasting (AREA)
- Cookers (AREA)
Abstract
Description
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/970,061 US8931473B2 (en) | 2009-03-17 | 2010-12-16 | Method for controlling a cooking point of a gas oven and device |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009014570 | 2009-03-17 | ||
DE102009014570.2 | 2009-03-17 | ||
DE200910014570 DE102009014570A1 (en) | 2009-03-17 | 2009-03-17 | Method for controlling a hotplate of a gas range as well as device |
US12/724,664 US20100239987A1 (en) | 2009-03-17 | 2010-03-16 | Method for controlling a cooking point of a gas oven and device |
US12/970,061 US8931473B2 (en) | 2009-03-17 | 2010-12-16 | Method for controlling a cooking point of a gas oven and device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/724,664 Continuation US20100239987A1 (en) | 2009-03-17 | 2010-03-16 | Method for controlling a cooking point of a gas oven and device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20110083663A1 US20110083663A1 (en) | 2011-04-14 |
US8931473B2 true US8931473B2 (en) | 2015-01-13 |
Family
ID=42331073
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/724,664 Abandoned US20100239987A1 (en) | 2009-03-17 | 2010-03-16 | Method for controlling a cooking point of a gas oven and device |
US12/970,061 Active 2031-06-11 US8931473B2 (en) | 2009-03-17 | 2010-12-16 | Method for controlling a cooking point of a gas oven and device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/724,664 Abandoned US20100239987A1 (en) | 2009-03-17 | 2010-03-16 | Method for controlling a cooking point of a gas oven and device |
Country Status (4)
Country | Link |
---|---|
US (2) | US20100239987A1 (en) |
EP (1) | EP2230462B1 (en) |
DE (1) | DE102009014570A1 (en) |
ES (1) | ES2584054T3 (en) |
Cited By (3)
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US20150374162A1 (en) * | 2014-06-30 | 2015-12-31 | Panasonic Intellectual Property Corporation Of America | Cooking apparatus, information display apparatus, control method, cooking tool, and non-transitory computer-readable recording medium |
US9803872B1 (en) | 2016-10-28 | 2017-10-31 | Bin Lu | Automatic heat-source shut-down system for cooking stoves |
US11357080B2 (en) | 2019-09-30 | 2022-06-07 | Midea Group Co., Ltd. | Cooking container sensing for ignition triggering and programmed cooking |
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AU2007361169A1 (en) | 2007-11-16 | 2009-05-22 | Fiesta Gas Grills Llc | Temperature control apparatus for a barbeque grill |
US9289096B2 (en) * | 2007-11-16 | 2016-03-22 | Wolfedale Engineering Limited | Temperature control device and method |
US9078449B2 (en) | 2012-07-24 | 2015-07-14 | General Electric Company | Cook top grate as utensil size/presence detector |
EP2703723B2 (en) * | 2012-08-28 | 2023-07-19 | Electrolux Home Products Corporation N.V. | Method of operating a gas burner of a cooking appliance |
JP2014238202A (en) * | 2013-06-06 | 2014-12-18 | リンナイ株式会社 | Gas cooking stove |
DE102013218339A1 (en) * | 2013-09-12 | 2015-03-12 | E.G.O. Elektro-Gerätebau GmbH | Method for pot detection and gas hob |
DE102013218950A1 (en) * | 2013-09-20 | 2015-03-26 | E.G.O. Elektro-Gerätebau GmbH | Device and method for pot detection |
GB2520088A (en) * | 2013-11-12 | 2015-05-13 | Yougreen Ltd | Gas burner safety system, sensor unit and method |
DE102014218741A1 (en) | 2014-09-18 | 2016-03-24 | E.G.O. Elektro-Gerätebau GmbH | Method for pot detection and gas hob |
WO2016181191A1 (en) * | 2015-05-12 | 2016-11-17 | Yougreen Limited | Gas burner safety device, system and alarm |
US10228144B2 (en) | 2015-05-28 | 2019-03-12 | Whirlpool Corporation | Method of pan detection and cooktop adjustment for multiple heating sections |
ES2807581T3 (en) | 2015-09-22 | 2021-02-23 | Electrolux Appliances AB | Gas Burner Arrangement for a Gas Cooker with a Thermocouple and Procedure for Determining If a Cooking Vessel Is Located Above the Gas Burner |
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CN109386845B (en) * | 2017-08-14 | 2022-05-17 | 博西华电器(江苏)有限公司 | Kitchen range and ignition control method thereof |
JP7161880B2 (en) * | 2018-07-23 | 2022-10-27 | リンナイ株式会社 | heating cooking system |
US12066192B2 (en) | 2018-11-29 | 2024-08-20 | Broan-Nutone Llc | Smart indoor air venting system |
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2009
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2010
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- 2010-03-17 EP EP10156718.8A patent/EP2230462B1/en active Active
- 2010-03-17 ES ES10156718.8T patent/ES2584054T3/en active Active
- 2010-12-16 US US12/970,061 patent/US8931473B2/en active Active
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Also Published As
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ES2584054T3 (en) | 2016-09-23 |
US20100239987A1 (en) | 2010-09-23 |
EP2230462A2 (en) | 2010-09-22 |
US20110083663A1 (en) | 2011-04-14 |
DE102009014570A1 (en) | 2010-09-23 |
EP2230462B1 (en) | 2016-05-11 |
EP2230462A3 (en) | 2011-03-30 |
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